Drill-hole-cleaning attachment for hammer-drills.



D. S. WAUGH.

DRILL HOLE CLEANING ATTACHMENT FOR HAMMER DRILLS.

APPLICATION FILED MAY 25, 1907.

' Patented Dec. 22; 1908.

2 SHEETS-SHEET 1.

Ur M EiluE 1 @QWO ZZM.

wits Law; v c

D. S. WAUGH. DRILL HOLE GLEANING ATTACHMENT FOB. HAMMER DRILLS.

- APPLICATION FILED MAY 25, 1907. 907,430, Patented Dec. 22, 1908.

2 SHEETSSHEET 2.

- once being Ymeans for controlli UNITED STATES PATENT UFFICE.

DANIEL s. WAUGH, or. DENVER, COLORADO, ASSIGNOR TO rna DENVER-ROCK DRILL AND human sm-emanate ATTAOIHIENT son HAMMER-DRILLS.

ire. cornea.

Specification of Letters Patent.

tmoniuaar COMPANY, or DENVER, COLORADO.

Application filed May 25, 1907. Serial. No. 375,741).

To all whom it may concern:

Be it known that I, DANIEL S. Warren, a citizen of the United States, residing at the oi and county of Denver and State of C010- 1 e, have invented certain new and useful Im movements in Drill-Hole-Cleani Attac ments for Hammer-Drills; and I 0 declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, refer ence marked thereon, which form a part of this specification. p

My invention relates to improvements in the passage ofair and water through a hol ow drill bit to the drill hole in hammer drills. Y 7

By virtue of my improvement, the same valve thatregulates the sup ly of water to the drill hole, may also be uti ized for cutting off the water and turning on the air whereby the one or the other fluid as may be desired may be utilized for this purpose. In )utting in down-holes it is preferred to utilize the water, while in drilling up-holes, it is preferred to utilize the air since in the up-hole work the drill cuttings are washed out in the'form of mud and interfere with the work of those in charge of the drill. On the other hand it is I advisable to use the water as much as possible since it obviates or overcomes the dust incident to'the use of air alone for cleaning the drill hole.

By virtue of my improvement the mechanism ma be readily adjusted to cut ofi the Water an turn on the air or vice versa without. stopping the machine. To this end I employ a three way valve adapted to be so adjusted that one of its ports communicates with a passage leading from the motive fluid supply of the main valve, at the same time cutting off the water supply. Again the valve may be so adjusted as to cut off the air supply and allow the passage of water to the dril hole.

Having briefly outlined my im roved construction, I will proceed to descri e the same illustrating a hammer rill equipped with my improvements. Fig. 2 is a'section taken same parts in all the views. had to the accom anying drawand to the letters and gures of referof a drill illustrating my im )rovements, the

conduit for sup lying the uid to the drill hole as well as t valve for controlling said supply, is shown in section. Fig. 4 is a view similar to Fig. 3 but showing the three way valve in a different position.

The same reference characters indicate the Let the numeral 5 desi nate the body oi the drill, and 6 the valve or controlling the motive fluid supply thereto. Connected with one side of the body of the drill and communicating with the chamber 7 of the main valve, is a valve body 8 which is threaded into an opening 9. This valve body 8 is provided with a passage 10 ads. ted to commu nicate with a port 12 forms in an auxiliary valve 13 located in the valve body. This last named valve is a three way valve having its port 12 extending therethrough and an additional port 14. From the chamber 7 of the main valve 6, a passage 15 leads to the recess 16 into which the valve body part 5 Screwed into the valve bodyffi on inserted. opposite sides are two nipples 17 and 17 with which conduit members 18 and 19 are respectively connected. lhe conduit memher 8 leads from a source of water supply while the conduit member 19 is utilized to carry either air or water as may be desired.

The extremity of the conduit member 19 remote from the valve body 8, is connected with a nipple 20 threaded into an elbow 21 whose opposite extremity communicates with a chamber 22 in which the chuck 23 for holding the drill steel 24 is inserted. This drill steel as shown in the drawing is provided with a lor'igitudinal passage 25 for delivering fluid to the bottom of the drill hole, the inner extremity of said passage communicating with the chamber 22.

Assuming that the )arts are in the position shown in Fig. 4, that is to say assuming that the auxiliary valve 13 is adjusted to bring its port 12 into .alinemcnt with the nip ples 16 and 17 the water will pass freely from the conduit-member 18, through the ort 12 of the valve, and thence through the member 19, the nipple 20 and the elbow 21, into the chamber 22 of the drill and thence through,

the assage. 25 of the drill steel to the bottom of t 1e hole. Now assuming that it is 1. -1

to cut ofl the water" supply and introduce air to the drill for cleaning dpurposes, the auxiliary valve 13 will be a 1" usted or turned to the position shown in ig. 3, whereby the water supply is cut oil, andthe motive fluid allowed to pass from the valve chamber 7, through the passage 15, the chamber 16 the passage 10, and the ports 12 and 14 oi the auxiliary valve, to the conduit member 19 and thence to the drill hole by the same path as heretofore explained in describing the course of the water. I Attention is called to the fact that the motive fluid for actuating the drill is introduced thereto through an opening 26 formed in a nip le 27 threaded into the body of the drill as s own at 28 and having a assage 29 communicating with the valve 0 amber 7. The

motivefluid passes from the chamber 7 to the body' of the drill through a port 30 of the valve. As nothing is claimed on the special construction Whereb the motive fluid is supplied to the drill'bo y for operating the drill steel, no further explanation in regard to this sub'ect will be required.

Vilhen it'is desired to admit motive fluid to the hole independently of the operation of the drill, the auxiliary valve 13 is adjusted or turned to the position as shown in Fig. 3, whereby the water sup ly is cut off. The

main valve 6 is then a justed so that communication between the operatin mechanism of the drill is also'cut off. his allows the motive fluid to pass direct from the mo.-

tive fluid supply to the valve chamber 7 i through the passage 15, the chamber 16, the

passage 10 and the orts 12 and 14 tothe auxiliary valve to t e conduit member 19 and thenceto the drill hole. Y

Having thus described my invention, what I claim is:' a

A drill body provided with a hollow drill bit aconduit connected with the forward end of the drill body for delivering the drillhole-cleaning flui to said hollow drill bit, a valve body interposed between the forward and rear members of the said conduit and threaded in the body of the drill, the valve piece passage therein located in said valve ody, a connectionbetween the motive fluid receiving portion of the drill body and the chamber of the 'valve'whereby motive fluid is supplied from the drill body to the valve, the valve being capable ofadjustment to allow the motive fluid to pass through the munication with the rear member is cut off, or to open communication between the two members of the conduit While the motive fluid is cut off and suitable means for delivering motive fluid to the drill hole independ ently of the operation of the drill, substantially as descrlbed.

7 a5 forward member of the conduit while com- In testimony whereof I affix my signature in presence of two witnesses.

v DANIEL s. warren. Witnesses:

- DENA NELSON,

A. J. OBRIEN. 

